PROTHENA CORP PLC's ticker is PRTA and the CUSIP is G72800108. A total of 156 filers reported holding PROTHENA CORP PLC in Q3 2017. The put-call ratio across all filers is 2.30 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2021 | $1,409,000 | +160.9% | 56,100 | +24.7% | 0.04% | +218.2% |
| Q4 2020 | $540,000 | +8.0% | 45,000 | -10.0% | 0.01% | -38.9% |
| Q3 2020 | $500,000 | -61.4% | 50,000 | +150.0% | 0.02% | -94.0% |
| Q3 2017 | $1,296,000 | +19.7% | 20,000 | 0.0% | 0.30% | +10.0% |
| Q2 2017 | $1,083,000 | -3.0% | 20,000 | 0.0% | 0.27% | +31.6% |
| Q1 2017 | $1,116,000 | – | 20,000 | – | 0.21% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| EcoR1 Capital, LLC | 11,284,280 | $580,125,000 | 21.68% |
| Prosight Management, LP | 422,000 | $21,695,000 | 13.57% |
| First Light Asset Management, LLC | 1,927,829 | $99,110,000 | 5.95% |
| Palo Alto Investors LP | 1,731,482 | $89,015,000 | 4.90% |
| DCF Advisers, LLC | 61,750 | $3,175,000 | 1.12% |
| APOGEM CAPITAL LLC | 32,104 | $1,650,000 | 1.05% |
| EAM Global Investors LLC | 70,255 | $3,612,000 | 1.00% |
| Rock Springs Capital Management LP | 950,091 | $48,844,000 | 0.96% |
| Atika Capital Management LLC | 234,000 | $12,030,000 | 0.95% |
| Birchview Capital, LP | 30,247 | $1,555,000 | 0.93% |